Rotor Bearings - Echo BEAR CAT CH45540 Owner's Manual

SERVICE & MAINTENANCE
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE, AND
6. Remove the 3/8" × 3-1/2" hex bolt, washer and
nut securing the idler pulley to the idler weldment.
Remove the idler pulley.
7. Remove the 3/8" × 4" hex bolt, washers, spacers and
nylock nut securing the idler weldment to the chipper
housing. Move the idler weldment out of the way.
Figure 5.8, Rear Belt Drive Replacement
8. Remove the old belt and install the new belt.
9. Reattach the idler weldment to the chipper housing.
10. Reattach the idler pulley to the idler weldment.
11. Tighten the eye bolt until the belt deflection is about
7/16" when a 20 lb. load is placed against the belt.
12. Reinstall the forward belt shield using eight 5/16" ×
3/4" bolts and washers.

5.11 ROTOR BEARINGS

5.11.1 REMOVING ROTOR BEARINGS
1. Move the engagement lever to the RELEASE position.
2. Disengage PTO and shut off tractor engine.
3. Remove the front belt shield.
4. Remove the front bearing snap ring. Then, remove
the 1/2" × 1-1/2" hex bolts that connect the front
bearing to the bearing support weldment.
5. Take off the bearing support weldment by removing
four 3/8" nylock nuts.
16
MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
4.5 INCH CHIPPER
WARNING
6. Remove the front bearing snap rings and loosen the
bearing set screw.
7. Slide the front bearing off the rotor shaft.
8. Remove the 3/8" × 3-3/4" hex bolt, washers and
nylock nut securing the idler pulley to the idler bracket.
Remove the idler pulley.
9. Remove the drive belt from the pulleys.
10. Using the push bolts from the bushing, remove the
sheave and bushing from the rotor shaft.
11. Remove the 1/2" centerlock nuts holding the rear
bearing to the chipper frame.
12. Remove the bearing snap rings and loosen the set
screw. Slide the bearing off the shaft.
5.11.2 INSTALLING ROTOR BEARINGS
1. Slide a snap ring, rear bearing and another snap
ring onto the rotor shaft. Tighten the set screw and
install the 1/2" hardware to connect the bearing to the
chipper frame. Torque to 120 ft-lbs.
2. Reinstall the bushing and sheave on the rotor shaft.
3. Replace the drive belt. Using a straight edge, check
the belt alignment. The two sheaves must be flush.
4. With the engagement lever in the RELEASE position,
reinstall the idler pulley.
5. Slide the front bearing and snap rings onto the rotor
shaft.
6. Install the bearing support weldment with 3/8"
hardware. Attach the front bearing to the support
weldment with two 1/2" × 1-1/2" bolts. Torque bearing
bolts to 120 ft-lbs. Tighten the bearing set screw.
7. Reinstall the front belt shield.
To replace any of the other four bearings on the PTO
chipper, use a method similar to the process in Section
5.11.2. However, these four bearings contain locking
collars. To loosen the lock collar, loosen the set screw
and insert a punch into the collar open hole. Using
a hammer, tap the punch in the opposite direction of
normal shaft rotation. To install a new bearing, tap the
collar in the direction of shaft rotation and tighten the
set screw.
NOTE